This is my first diesel so I figure if it normal someone will let me know. All of my Mods got done when it was cool outside and then winter so I was just checking. I thought maybe a Intake Air temp sensor might trigger that or the tech got a air pocket when putting new colant in.? Because my gauge reads perfect no change at all same temp.

Its fine dont worry. As long as its not overheating and the heat in the cab is hot when you want it too its fine. The cooling fan has an electroviscouse clutch and is pcm controlled and will cycle on and off on its own.

Like the others said, the fan coming on is completely normal and will run even more as it gets hotter this summer. It's not an "overheat" fan. It's an engine cooling fan. It can even run when it's cold outside but will run more/faster when you're hauling a load and/or in warmer temperatures.

Thanks for all of your help and info sounds like a non issue so it might be SCT and exhaust time just want to make sure I have all of the bugs out before the power adders!!!! Oh and no I am not monitoring engine oil temp loco but I will keep that in mind!

If I were you I would at least put a scan tool on it and make sure your oil temp and your engine temp are within 20 deg of each other. that was the first sign my oil cooler went bad, my fan kept kickin on at normal temps. Took my valve covers off they we loaded with junk from coolant getting into my oil. Good luck with it..

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